First select all faces. then click menu Part -> join -> connect objects. Then apply offset. It will generate open 3d offset, not possible for filled shape. Edit : [reason for not a good filled shape, but i am not sure] All faces normal should be pointing outward. but Some faces normal are towards in...

Manually You have to check the condition, relief width ['reliefw'] should be equal or less than gap[say gap1 or gap2]. In attached file, reliefw = 8mm, so it is cutting at 8mm even gap 0.61. Pls adjust to reliefw = 0.61 to get it correctly.

Thank for support.
I used "Spreadsheet.coil_l / .IntervalY.y". Now I corrected to Spreadsheet.coil_l * 1mm / .IntervalY.y.

But error message too complicated to understand as a user.

If it is like "[error] Unit mismatch", very easily understandable.

When i use draft array, it giving an error. 309.168 <App> Document.cpp(3368): exception in Unnamed#Array thrown: bad cast Sample file attached. OS: Windows 10 (10.0) Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19.17877 (Git) Build type: Release Branch: master Hash: 1e19ef5be4735f...

Just for info
Bricscad shape sketchup alternative for linux
https://www.omgubuntu.co.uk/2019/07/bri ... tive-linux

By Wednesday, I can check.

We can change x+ y to max(x,y) line 356 & 357. While adding x + y gap 5 + 5 become 10. So that May be the problem.

same issue for me also. during export 232 faces only exporting, balance around 300 face left.

following error while opening FreeCAD Traceback (most recent call last): File "D:\SETUPS\FreeCAD_0.19\Mod\Draft\Draft.py", line 3983, in updateData import DraftGui File "D:\SETUPS\FreeCAD_0.19\Mod\Draft\DraftGui.py", line 2668, in <module> FreeCADGui.draftToolBar = DraftToolBar() File "D:\SETUPS\Fre...

My Freecad version OS: Windows 7 Word size of OS: 32-bit Word size of FreeCAD: 32-bit Version: 0.19.16653 (Git) Build type: Release Branch: master Hash: aaae82970461c10b76281f4e4454ab086b5f7f21 Python version: 2.7.14 Qt version: 4.8.7 Coin version: 4.0.0a OCC version: 7.2.0 Locale: English/India (en...

Just see the screenshot.
Measurement icons active on empty window & click create access violation error. Placement also active on empty window.